current bounds on the number of colors: 0 -- 184 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:04 2012 Optimize a model with 15180 rows, 17091 columns and 61916 nonzeros Presolve removed 31 rows and 2852 columns Presolve time: 0.12s Presolved: 15149 rows, 14239 columns, 59064 nonzeros Variable types: 0 continuous, 14239 integer (14239 binary) Root relaxation: objective 0.000000e+00, 271 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (271 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:04 2012 Optimize a model with 7682 rows, 8627 columns and 30958 nonzeros Presolve removed 31 rows and 1426 columns Presolve time: 0.07s Presolved: 7651 rows, 7201 columns, 29532 nonzeros Variable types: 0 continuous, 7201 integer (7201 binary) Root relaxation: objective 0.000000e+00, 270 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (270 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:04 2012 Optimize a model with 3933 rows, 4395 columns and 15479 nonzeros Presolve removed 31 rows and 713 columns Presolve time: 0.02s Presolved: 3902 rows, 3682 columns, 14766 nonzeros Variable types: 0 continuous, 3682 integer (3682 binary) Root relaxation: objective 0.000000e+00, 269 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (269 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:04 2012 Optimize a model with 1977 rows, 2187 columns and 7403 nonzeros Presolve removed 31 rows and 341 columns Presolve time: 0.01s Presolved: 1946 rows, 1846 columns, 7062 nonzeros Variable types: 0 continuous, 1846 integer (1846 binary) Root relaxation: objective 0.000000e+00, 272 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (272 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:04 2012 Optimize a model with 999 rows, 1083 columns and 3365 nonzeros Presolve removed 31 rows and 155 columns Presolve time: 0.00s Presolved: 968 rows, 928 columns, 3210 nonzeros Variable types: 0 continuous, 928 integer (928 binary) Root relaxation: objective 0.000000e+00, 261 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (261 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:04 2012 Optimize a model with 510 rows, 531 columns and 1346 nonzeros Presolve removed 194 rows and 230 columns Presolve time: 0.00s Presolved: 316 rows, 301 columns, 948 nonzeros Variable types: 0 continuous, 301 integer (301 binary) Root relaxation: objective 0.000000e+00, 156 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 136 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (503 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:04 2012 Optimize a model with 673 rows, 715 columns and 2019 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 642 rows, 622 columns, 1926 nonzeros Variable types: 0 continuous, 622 integer (622 binary) Root relaxation: objective 0.000000e+00, 253 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (253 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% optimal solution found: number of colors: 3